Internal-combustion engine.



J. J. MoINTYRE.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED FEB. 23, 1907.

920, 1 67, Patented May 4, 1909.

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APPLICATION I'ILBD FEB. 28, 1907.

Patented May 4, 1909.

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' Invent 0 71" Jo/mJ NIntyre.

UNITED STATES PATENT OFFICE. 'ifiliffiliiiifiiifi Specification 0! Letters Patent.

Patented In? 4, 1908.

Amman nu Iebmw 28, 1907. Serial No. 359,928.

To all whom "it may concern:

'Be it known that 1, JOHN J. MCINTYRE, a

citizen of the United States, maid in Hartford, in the county of Hartford an State of Connecticut, have invented certain new and Improvements in IntcrnaLCombususeful tion Engines, of which the following is a' specification. v

This invention relates to internal combustion engines, and has for an object to i'ovide means whereby the air drawn into 't' e carburetor will traverse the radiation surfaces of the i nition chamber and the cylinder,

cooling these upon its passage to the carbureter and arriving at the carburetor in a heated condition. The advantages are that not only does the air in such passage serve to cool the i nition chamber and the cylinder, but it will arrive at the mlxin chamber of the carburetor in a heated con' ition, which will facilitate the gasification of the oil employed and will raise the temperature of this so that the charge of aseous mixture delivered to the ignition Slants will be in a heated condition and thereb facilitate the more complete combustion the charge.

In the form of my invention illustrated the air will be drawn in and pass across and between a number of radiation plates which are so disposed relative to the c linder and a surrounding casin that the air will ass back and forth as t rough a labyrint ian passage. The charge of fresh air in this mannor will first-be presented to the portion of the en ine in which the explosion takes place and which is generally the most apt to become overheat-ed, thereby insuring its being maintained at a sufficient temperature that .1 ".3isaviewlo arts do not burn out.

c invention broadly contemplates the cooling of an internal combustion engine by the air drawn into the carburetor.

In the drawings accompanyingoand forming-a part of this specification a rm ofmy inventionis illustrated wherein Figure 1 is a central vertical section of an en e equipped witha practical embodiment o aform o m the improvement; the engine here illustrated is of the our cycle vertical t e. 2 isa top lan view of the engine 11 rate in Fig. 0 ing down on'the en- ;and taken principally on a' laneindiwas by the dotted lin sin 1 with theciception of ceitam parts- 65 I ieh are shown in; anotherplanawhich lane will be apparent upon a comparison of hcjrefcruncc characters. Fi 4 is aperspective viewbf the castingwlnch conmtutes the cylinder. Fig. 5 is a reduced Fig. 6 is a reduced p an view of either plate 0, e, g, i, or 7c. Fig. 7 is a reduced plan view of either plate d or h; and Fig. 8 1s a reduced plan view of either late b or f.

The engine cylin or is designated bythe reference character 5 and is shown as intended for occupying a vertical position when in use, the cylinder is provided at its lower portion with a flange 6, which may be employed for bolting or otherwise scouring the engine to its base. Within the cylinder is mounted a piston 7 having apitman 8 con-' tion of the walls of the cylinder, 'althou of plan view of the plate r.

somewhat larger radius in the present 1 histration. The end 10 of which chamber will be considered the cylinder head and above the cylinder head are rovided the supply inlet and exhaust chain ers, there being cast integral with the cylinder in the present mstance a head 11 and there being between the inlet chamber 12 and the exhaust chamber 13 a partition 14. From the exhaust chamber 13 there is shown extending aconduit 15leading to some exhaust, which in practice will generally be a mulller. This, of course, does not concern the present invention and is not illustrated. A conduit 16 leads into the inlet chamber from a carburetenpreserrtly to I i be described. A valve and valve seat is provided for each of the chambers 12 and 13 for oontrollin the communication with the ignition c amber. The inlet conqm'ses' a valve body 22 which has "a valve seat 18 fnccamie b a valve stem 1'7 guided in a flange '23 oi the ody portion. A suitable comprsssionspring 2 1 held in place by a bur 2t and pin '26, is em eyed for holding the valve to its seat. The valve is shown as controlled conduit 33..

ent illustration are side will be thence, device,

'which also projects there is a casing 32 connected to such extendthe walls .of the cylinder.

by means of a lever 27 pivoted at 28 to a post 29 and having means of attachment at 30 for some operative part of the mechanism. valves in the present instance for the inlet and for the exhaust are illustrated as substantially similar and to prevent extending the description the same reference characters are applied to both.

The head or late 11 projects beyond the sides of the cy inder and there is a flange 31 at the bottom I ortion of the cylinder,

beyond the cylinder, and

ing portions 11 and 31. The air conduit 33 which leads to the mixing chamber 34 of the carbureter enters the lower portion of the chamber formed between the casing 32- and The casing is shown as comparatively thin, but having an enlargement 35 for the engagement of the A hydrocarbon induction nozzle 36 is shown as entering the mixing chamber 34. 2 r

The tbp plate 11 is provided with a pair of normally open air inlets 37. The walls of the cylinder and the ignition chamber are provided with radiation lates, which in the presisposed 'in a horizontal These radiation plates at most of their edges extend to the casing 32. The passages are not alternatel arranged but will be seen that several 0 the plates at girie provided'with passages, and tffen several at t e other side, so that the stream of air passing inwill not all pass over the same plates; otherwise the air will et too hot at the, first part of its passage. A arger volume of air is passed over the en ine as a whole by the construction illustrate than if all the air had to pass between each two plates. After the air arrives at the lower portion of the chamber between the casing 32 and the cylinder' wall it will find entrance into the carbureter conduit 33 and will in its heated condition, after. having reduced the temperature of the parts over which it is has passed,

plane.

enter the mixing chamber 34, and owing to its high heat will form an explosive mixture with the oil delivered by the induction device 36; the-mixture will then pass on through the conduit 16 to the inlet chamber 12, and as required by the-operation of the pass from the valve 21 into the ignition chamber.

The radiation plates and the open spaces which these plates leave are so disposed one relative to the othersv that the current of air will be divided into two streams, one of which will traverse one side of the cylinder and the other of which will traverse the other side'of the cylinder, each stream passing back and forth from side to side several times in its passage from one end of the cylindei' to the other and being sub-divided in its several passes from one side to the other.

of course, be cooler.

The two streams and the sub-divisions of these will come to ether at given intervals at each side of the cylinder but in the main, the streams will be divided and sub-divided as before referred to. Some of the radiation plates as for instance plates a, c, e, g, i and 7c are each rovided with an opening at each side, whic openings in Fig. 4 at the left side bear the reference character of the plate primed and at the right side with the exponent 2. The plates 1;, (Z and h are provided with o enings at ac,.d, h at the left hand side on y and the plates 1; and f are provided ugh openings 1) and f 2 at the right hand side 0 y. plate 11 and pass around the outside of the chambers 12 and 13'between the plates 11 and :c, which )late a in the present instance is an outward continuation of the cylinder head 10. The air. will pass through the opening as when its direction of flow will be reversed toward the other side of the cylinder, part of this stream assing'between the plate z and a and part between the plate a and b. That portion of the stream of air which has been caused to pass between the plates as and a will pass over the'opening a, and b and that portion of the air which passedover the o ening a and between the lates a and 'b pass over the opening b he air will so pass on from side to side upon each side of the cylinder in sub-divided streams until it reaches the space at the right hand side between the plates h and 31, when it will be conveyed to the mixing chamber 3 1 by means of the ipe 33. The air will then be very hot and W1 1 immediately gasify the oil supplied by the carbureter 36. The explosive mixture will then be conveyed by the ipe 16 into the inlet chamber 12.

T e suction stroke of the piston will, when the valve 21 is open, draw the air through the conduit 16, the mixing chamber conduit 33,

and the chamber between the casing 32 and the cylinder walls from the openm s which, as before stated, will normaTly open. One advantage of having these an inle s normally 0 en 1s that upon the explosion heating up t is ignition chamber and the cylinder any rise in temperature of the air and its ex ansion will be followed by a discharge of t e air through. these openings, and u on suction taking place this dischar ed air will be substituted by other air, whic will,

Having described my invention I claimf ,1. In an internal combustion engine, the

combination with a cylinder, of a carburetor,

a conduit leading from 'thecarbureter to the explosion chamber of thecylinder, radiation plates on the cylinder, a casin surroun 'ng the plates and explosion'ch'am er of the cylinder; one side of said cylind posit-e side thereofisaid plates beingaltersome of said plates having passages at 7 er and some at the opozone? natelydisposed, and some of the plates being located between the said plates having openings at both of the said sides of the cylinder,

the radiation plates and casing constituting a labyrinthian-air passage doub ing upon itself several times about each side of the cylinder, an air inlet at one end of the casing, and a conduit connecting the other end of the easing with said carbureter.

2. In an internal combustion engine having a cylinder and an ignition chamber, the combination with a casing surrounding the ignition chamber and the cylinder and spaced away from the same, a series of radiation plates surrounding said chamber and cylinder and extending from the walls of these to the walls of the casing, some of said plates being provided with openings at one side only, those plates havingopenings at one side only being disposed between plates having openings at both sides, the plates having openings at one side only being so arranged that their openings are disposed alternately in re ister with the openings at the res ective si es of the plates having openings at 0th sides, said casmg'having an air inlet at one end and an air outlet at the opposite end, a mixing chamber, a conduit connecting the outlet from said casing with the mixing chamber and connecting said mixing chamher with the ignition chamber.

. 3. In an internal combustion engine, the combination with a cylinder, of a carbureter, a conduit leading from the carburetor to the explosion chamber of the cylinder, a casing surrounding the cylinder and spaced away from the same, the space between the casing and cylinder having an air inlet openin at one end, means within said space for divi 'ng the air into two streams, one traversing one side of the cylinder and the other traversing 'the other side, for causin each stream to pass back and forth severa times across the side it traverses, and for sub-dividin each of said streams in its several passages rom one side to the other, and a conduit connecting the other end of the space with the carbu- "reter.

JOHN J.MoINTYRE.

' Witnesses:

CHAS. R. YORGENSEN, J OHN GLYNN. 

